These data are pulled from FSIS (online, downloaded Nov 2021) and GeoHub (https://geohub.lio.gov.on.ca/datasets/mnrf::historical-fish-stocking-data-1900-1999/about). The quality of the data pre-FSIS is unknown (there are data missing - use with caution).
In total, 5895 Brown Trout stocking records were found (see the table below for breakdown by years).
| Bin | Events | Weight_NA | Age_NA |
|---|---|---|---|
| 1929-1945 | 5 | 5 | 5 |
| 1946-1960 | 1,151 | 1,151 | 1,151 |
| 1961-1981 | 22 | 22 | 22 |
| 1982-2000 | 1,733 | 412 | 1,731 |
| 2001-2021 | 2,984 | 207 | 46 |
| Total | 5,895 | 1,797 | 2,955 |
These tables show the age and weight ranges (min and max) of the various Brown Trout life stages for both ‘old’ and ‘new’ data sets. n = number of stocking events of the particular life stage. Spring Yearling is the most popular Brown Trout life stage for stocking.
Note that the range of weights for most life stages suggests that there are errors/outliers - see box plots below. Seems to be a problematic variable, regardless of year.
| LIFESTAGE | n | min_age | max_age | min_wt | max_wt |
|---|---|---|---|---|---|
| Egg | 2 | 0 | 0 | 0.59 | 0.59 |
| Fry | 180 | 1 | 2 | 0.02 | 1.50 |
| Spring Fingerling | 374 | 3 | 10 | 0.30 | 118.00 |
| Fall Fingerling | 676 | 6 | 11 | 1.21 | 242.60 |
| Spring Yearling | 3,958 | 12 | 19 | 16.00 | 221.70 |
| Fall Yearling | 439 | 12 | 18 | 0.35 | 175.00 |
| Sub-adult | 148 | 20 | 35 | 45.00 | 6,200.00 |
| Adult | 118 | 36 | 88 | 400.00 | 6,200.00 |
Note that eggs are not included in row totals.
Should cross-reference these numbers with other sources to make sure the broad trends make sense (particularly 1960 - 1980: did we really stop stocking Browns?).
| YEAR | Egg | Fry | Spring Fingerling | Fall Fingerling | Spring Yearling | Fall Yearling | Sub-adult | Adult | Total |
|---|---|---|---|---|---|---|---|---|---|
| 2021 | — | — | 35,184 | — | 232,619 | — | 1,088 | 838 | 269,729 |
| 2020 | — | — | 35,000 | 27,075 | 227,738 | 5,964 | 6,905 | 216 | 302,898 |
| 2019 | — | 1,670 | 44,000 | 97,994 | 244,479 | — | 26,993 | 139 | 415,275 |
| 2018 | — | — | 64,215 | 74,291 | 256,004 | 10,287 | 7,666 | 436 | 412,899 |
| 2017 | — | — | 42,055 | 103,542 | 250,109 | 1,100 | 5,203 | 153 | 402,162 |
| 2016 | — | 807 | 26,046 | 146,989 | 268,897 | 2,000 | 8,352 | — | 453,091 |
| 2015 | — | — | 30,114 | 91,936 | 293,228 | 37,645 | — | 278 | 453,201 |
| 2014 | — | 330 | 13,885 | 49,997 | 256,230 | — | 3,060 | 389 | 323,891 |
| 2013 | — | — | 35,120 | 192,871 | 270,401 | 11,116 | 3 | — | 509,511 |
| 2012 | — | 1,612 | 67,325 | 153,230 | 307,586 | — | — | 176 | 529,929 |
| 2011 | — | — | 53,240 | 111,116 | 293,844 | — | 12 | 18 | 458,230 |
| 2010 | — | 11,087 | 156,900 | 170,351 | 306,070 | — | — | 43 | 644,451 |
| 2009 | — | — | 67,700 | 333,412 | 278,487 | — | 8 | 470 | 680,077 |
| 2008 | — | — | 155,050 | 285,203 | 299,373 | — | 15 | 669 | 740,310 |
| 2007 | — | 3,850 | 137,475 | 494,761 | 269,016 | 95,677 | 46 | — | 1,000,825 |
| 2006 | — | 70,175 | 178,294 | 170,432 | 175,004 | 40,581 | 8,183 | 27 | 642,696 |
| 2005 | — | 2,345 | 36,500 | 309,690 | 274,953 | 845 | 9,867 | 353 | 634,553 |
| 2004 | — | 4,300 | 114,212 | 125,040 | 305,880 | 97,152 | 315 | 560 | 647,459 |
| 2003 | — | 4,500 | 17,702 | 221,332 | 289,029 | 52,890 | — | 667 | 586,120 |
| 2002 | — | 3,518 | 16,050 | 304,565 | 299,260 | 4,500 | 11,500 | — | 639,393 |
| 2001 | — | 1,000 | 127,600 | 122,452 | 272,437 | — | — | — | 523,489 |
| 2000 | — | 48,500 | 20,961 | 25,930 | 255,805 | 118,876 | — | 25 | 470,097 |
| 1999 | 1,271 | — | — | — | 276,637 | 126,360 | 783 | — | 405,051 |
| 1998 | 1,700 | 57,820 | 500 | — | 237,382 | 157,802 | 11,169 | — | 466,373 |
| 1997 | — | 45,414 | 87,030 | 6,011 | 300,949 | 179,799 | — | — | 619,203 |
| 1996 | — | — | 54,000 | 57,003 | 285,612 | 157,773 | — | 28 | 554,416 |
| 1995 | — | 50,000 | 2,500 | — | 351,715 | 172,132 | — | — | 576,347 |
| 1994 | — | — | 35,000 | — | 331,564 | 149,998 | 820 | 850 | 518,232 |
| 1993 | — | — | 53,726 | — | 320,845 | 3,570 | 400 | 391 | 378,932 |
| 1992 | — | — | — | 35,499 | 465,399 | 24,362 | 1,048 | 721 | 527,029 |
| 1991 | — | — | 23,500 | 57,040 | 572,564 | 161,277 | 1,610 | — | 815,991 |
| 1990 | — | 14,814 | 11,000 | 24,820 | 585,959 | 2,033 | 548 | — | 639,174 |
| 1989 | — | 40,200 | 42,450 | 32,215 | 485,054 | 100 | 1,016 | — | 601,035 |
| 1988 | — | 22,757 | — | 77,551 | 463,495 | 23,701 | 1,035 | — | 588,539 |
| 1987 | — | 19,888 | 2,304 | 104,907 | 307,609 | 44,768 | 669 | — | 480,145 |
| 1986 | — | 24,375 | 1,860 | 55,484 | 284,928 | 25,489 | 955 | — | 393,091 |
| 1985 | — | 33,120 | — | — | 137,538 | 27,395 | 930 | — | 198,983 |
| 1984 | — | 19,231 | — | 39,968 | 122,409 | — | 3,465 | — | 185,073 |
| 1983 | — | 12,239 | — | — | 134,271 | — | — | — | 146,510 |
| 1982 | — | 8,335 | — | 22,120 | — | 49,150 | — | — | 79,605 |
| 1976 | — | 2,500 | — | — | — | — | — | — | 2,500 |
| 1975 | — | 3,800 | — | — | — | — | — | — | 3,800 |
| 1971 | — | — | — | — | — | 10,000 | — | — | 10,000 |
| 1969 | — | — | — | — | 1,900 | — | — | — | 1,900 |
| 1966 | — | — | — | — | 1,000 | — | — | — | 1,000 |
| 1962 | — | — | — | — | 8,000 | — | — | — | 8,000 |
| 1961 | — | — | 640 | — | 3,500 | 500 | — | — | 4,640 |
| 1960 | — | — | 1,700 | — | 81,315 | 7 | — | — | 83,022 |
| 1959 | — | — | — | — | 157,490 | 5,200 | — | — | 162,690 |
| 1958 | — | — | 8,000 | 21,800 | 175,255 | 3,680 | — | — | 208,735 |
| 1957 | — | — | 3,000 | 24,500 | 136,900 | 2,400 | — | — | 166,800 |
| 1956 | — | — | 39,000 | 20,000 | 137,950 | — | — | — | 196,950 |
| 1955 | — | 32,000 | 28,000 | 10,300 | 211,400 | 2,500 | — | — | 284,200 |
| 1954 | — | — | 3,000 | 67,000 | 140,100 | 14,700 | — | — | 224,800 |
| 1953 | — | 5,000 | 42,000 | 2,000 | 89,700 | — | — | — | 138,700 |
| 1952 | — | — | 5,100 | 80,000 | 104,500 | 3,000 | — | — | 192,600 |
| 1951 | — | 32,000 | 34,500 | 131,500 | 42,942 | — | — | — | 240,942 |
| 1950 | — | — | 62,000 | 97,000 | 76,300 | 24,175 | — | — | 259,475 |
| 1949 | — | — | 90,000 | 10,000 | 181,500 | 5,400 | — | — | 286,900 |
| 1948 | — | 199,000 | 71,200 | 139,640 | 259,463 | 28,720 | — | — | 698,023 |
| 1947 | — | — | 3,000 | — | 144,400 | 65,850 | — | — | 213,250 |
| 1946 | — | — | 7,000 | 77,500 | 147,900 | 73,690 | — | — | 306,090 |
| 1945 | — | — | — | — | — | 1,200 | — | — | 1,200 |
| 1933 | — | — | 35,000 | — | — | — | — | — | 35,000 |
| 1932 | — | — | 10,000 | — | — | — | — | — | 10,000 |
| 1931 | — | — | 110,000 | — | — | — | — | — | 110,000 |
| 1929 | — | — | — | — | 400 | — | — | — | 400 |
| Total | 2,971 | 776,187 | 2,341,638 | 4,806,067 | 13,692,294 | 2,025,364 | 113,664 | 7,447 | 23,765,632 |
Only data produced at MNR facilities used.
Note: biomass is given in kg.
| YEAR | Egg | Fry | Spring Fingerling | Fall Fingerling | Spring Yearling | Fall Yearling | Sub-adult | Adult | Total |
|---|---|---|---|---|---|---|---|---|---|
| 2021 | – | – | 70 | – | 10,543 | – | 206 | 1,935 | 12,754 |
| 2020 | – | – | 70 | 561 | 11,431 | 95 | 1,818 | 860 | 14,835 |
| 2019 | – | – | 175 | 1,632 | 13,622 | – | 4,726 | 625 | 20,780 |
| 2018 | – | – | 70 | 1,398 | 14,553 | 90 | 2,948 | 1,477 | 20,536 |
| 2017 | – | – | 70 | 2,312 | 13,699 | 31 | 2,014 | 585 | 18,711 |
| 2016 | – | – | 40 | 2,551 | 14,938 | 73 | 1,929 | – | 19,531 |
| 2015 | – | – | 240 | 1,519 | 13,593 | 1,506 | – | 688 | 17,546 |
| 2014 | – | – | – | 1,248 | 9,497 | – | 312 | 1,002 | 12,059 |
| 2013 | – | – | – | 3,105 | 12,259 | 860 | 14 | – | 16,238 |
| 2012 | – | – | 64 | 3,438 | 12,789 | – | – | 620 | 16,911 |
| 2011 | – | – | – | 1,269 | 11,395 | – | 74 | 112 | 12,850 |
| 2010 | – | 11 | – | 4,844 | 11,559 | – | – | 258 | 16,672 |
| 2009 | – | – | 30 | 4,031 | 10,674 | – | 40 | 1,165 | 15,940 |
| 2008 | – | – | – | 7,067 | 14,752 | – | 45 | 1,490 | 23,354 |
| 2007 | – | – | 70 | 6,999 | 13,810 | 1,917 | 80 | – | 22,876 |
| 2006 | – | 70 | 86 | 3,829 | 9,834 | 1,140 | 1,227 | 111 | 16,297 |
| 2005 | – | 1 | 64 | 5,687 | 14,367 | 41 | 1,130 | 501 | 21,791 |
| 2004 | – | – | 1,700 | 2,784 | 14,399 | 5,540 | 218 | 667 | 25,308 |
| 2003 | – | – | 13 | 5,139 | 15,078 | 1,304 | – | 1,033 | 22,567 |
| 2002 | – | – | – | 11,414 | 19,802 | 93 | 1,254 | – | 32,563 |
| 2001 | – | – | 3 | 3,140 | 16,062 | – | – | – | 19,205 |
| 2000 | – | 9 | 122 | 504 | 14,567 | 3,210 | – | 10 | 18,422 |
| 1999 | 1 | – | – | – | 12,622 | 3,296 | 422 | – | 16,341 |
| 1998 | 1 | 9 | 0 | – | 10,844 | 3,348 | 1,393 | – | 15,595 |
| 1997 | – | 6 | 111 | 42 | 9,021 | 4,840 | – | – | 14,020 |
| 1996 | – | – | 1,890 | 824 | 12,218 | 4,362 | – | – | 19,294 |
| 1995 | – | – | – | – | 14,037 | 4,000 | – | – | 18,037 |
| 1994 | – | – | – | – | 15,932 | 3,850 | 325 | 1,251 | 21,358 |
| 1993 | – | – | 72 | – | 16,073 | 103 | 163 | 847 | 17,258 |
| 1992 | – | – | – | 425 | 21,760 | 913 | 236 | 959 | 24,293 |
| 1989 | – | – | 24 | 261 | 19,022 | 18 | 931 | – | 20,256 |
| 1988 | – | – | – | 365 | 16,950 | 216 | 749 | – | 18,280 |
| 1987 | – | – | – | 1,163 | 14,174 | – | 407 | – | 15,744 |
| 1986 | – | – | – | 82 | 10,158 | 262 | 706 | – | 11,208 |
| 1985 | – | – | – | – | 3,116 | 483 | 642 | – | 4,241 |
| 1984 | – | 2 | – | 268 | 4,982 | – | 1,098 | – | 6,350 |
| 1983 | – | 0 | – | – | 3,966 | – | – | – | 3,966 |
| 1982 | – | – | – | 283 | – | 603 | – | – | 886 |
| Total | 2 | 108 | 4,984 | 78,184 | 478,098 | 42,194 | 25,107 | 16,196 | 644,873 |
Click on the point to see a summary of how many fish have been stocked at that site, number of stocking events, and the span of years (min and max) over which stocking has been done at this location.